下列各溶液中,Na+物质的量浓度最大的是  (     )A、4L 0.5mol/LNaCl溶

下列各溶液中,Na+物质的量浓度最大的是  (     )

A、4L 0.5mol/LNaCl溶液      B、1L 0.3mol/LNa2SO4溶液

C、5L 0.4mol/LnaOH溶液      D、2L 0.15mol/LNa3PO4溶液

 

答案

B

解析:

 

相关题目

下列操作或做法正确的是( ) A.把实验室的仪器和药品带
下列操作或做法正确的是( ) A.把实验室的仪器和药品带回家做家庭小实验 B.用滴管滴加液体完毕,把它横放在桌面上 C.在实验室中用尝味道的方
(2019·山西)冬季雾霾频发。某校社会实践小组的同学们,对某
(2019·山西)冬季雾霾频发。某校社会实践小组的同学们,对某地区雾霾的成分、成因、危害及防治产生了浓厚的兴趣并开启了项目性学习之旅。 (信息检索
       It was in New Zealand _____I was born _____Elizabeth first met Mr.
       It was in New Zealand _____I was born _____Elizabeth first met Mr. Smith. A.    that , that  B. which , which   C. where , that    D. that, which
 I was very angry with John—he just_______ when I spoke to him. A. isn’t li
 I was very angry with John—he just_______ when I spoke to him. A. isn’t listening  B. hasn’t listened  C. didn’t listen  D. wasn’t listening
在比例尺为1︰30000的地图上测得AB两地间的图上距离为8cm,则
在比例尺为1︰30000的地图上测得AB两地间的图上距离为8cm,则两地间的实际距离为       m.
单项选择 Work hard, _____ you’ll pass the final exam.      A. or 
单项选择 Work hard, _____ you’ll pass the final exam.      A. or     B. but     C. because   D. and
下列叙述正确的是 ( ) A.为了强化食品的色香味,可以大量使
下列叙述正确的是 ( ) A.为了强化食品的色香味,可以大量使用添加剂 B.油脂和糖类物质都能够为人体提供能量 C.合成纤维、合金、合成橡胶都是有机合
Do you kow that animals have love for each other and their children just like us
Do you kow that animals have love for each other and their children just like us humans? Let me tell you some moving stories of great animal parents. Several years ago a heavy rain hit a town and made

最新题目